REFURBISHED
Juniper
Juniper QFX5110-48S-AFO Refurbished 1.76 Tbps 48-Port Switch
MPN: QFX5110-48S-AFO
Request Bulk Quote
Lifetime
Warranty
ISO 9001
Certified Testing
R2v3
Responsible Refurb
25+
Years
5K+
Customers
ISO
Certified
✓
Tested
Every WhaleyComm unit is professionally tested, reset to factory defaults, and certified by our in-house engineers — the same standard trusted by 5,000+ organisations across 25 years. Not a refurb marketplace. A certified lifecycle partner.
Professionally tested to factory specification. Backed by 25+ years of enterprise trust.
This refurbished Juniper QFX5110-48S-AFO is a high-performance, 1U data center access and aggregation switch delivering 48 SFP+ ports for 1GbE/10GbE server connectivity and 4 QSFP28 uplink ports configurable as 4x40GbE or 4x100GbE, with an aggregate throughput of 1.76 Tbps and 1.32 Bpps. Each unit has been professionally tested and reset to factory defaults before shipment, meeting WhaleyComm's ISO 9001-certified quality standard.The QFX5110-48S-AFO runs Juniper's Junos OS and operates in both cut-through and store-and-forward modes, delivering wire-speed switching with sub-microsecond latency for any packet size including jumbo frames. The control plane is powered by a 1.8 GHz quad-core Intel CPU with 16 GB of memory and 64 GB SSD storage. Front-to-back (AFO) airflow suits standard hot-aisle/cold-aisle data center cooling layouts, and the switch supports VXLAN Layer 2 and Layer 3 gateway functionality for overlay/underlay network architectures including spine-leaf and top-of-rack deployments.
At $6,050, this refurbished QFX5110-48S-AFO represents exceptional value against a list price exceeding $22,000 — a saving of over 70% with no compromise on performance or reliability. WhaleyComm has served 5,000+ enterprise customers for 25+ years and stands behind every unit with a Lifetime Warranty.
Technical Specifications
Model
QFX5110-48S-AFO
Form Factor
1U rack-mountable
Operating System
Junos OS
CPU
1.8 GHz quad-core Intel
Memory
16 GB
Storage
64 GB SSD
Access Ports
48 x SFP+ (1GbE/10GbE)
Uplink Ports
4 x QSFP28 (configurable as 4x40GbE or 4x100GbE)
Breakout Support
Each QSFP28 port configurable as 4x10GbE; up to 64 total 10GbE ports
Switching Capacity
1.76 Tbps
Forwarding Rate
1.32 Bpps
Oversubscription
1.2:1 (access to aggregation)
Switching Modes
Cut-through and store-and-forward
Latency
Sub-microsecond
Airflow
Front-to-back (AFO), AC power
Virtual Chassis
Supported (up to 10 members)
Overlay Support
VXLAN Layer 2 and Layer 3 gateway
Ideal Use Cases
Data Center Top-of-Rack Deployment
The QFX5110-48S-AFO provides 48 native 10GbE ports for high-density server access and up to four 40GbE or 100GbE uplinks, making it ideal for top-of-rack switching in modern data centers with very low 1.2:1 oversubscription.
Spine-Leaf Fabric Architecture
With support for VXLAN Layer 2 and Layer 3 gateway functionality and high-bandwidth uplinks, the QFX5110-48S-AFO fits naturally as a leaf switch in EVPN-VXLAN spine-leaf topologies alongside Juniper QFX5110-32Q or QFX5200 spine switches.
Virtualized and Bare-Metal Server Environments
L3 gateway capabilities allow the switch to bridge between virtualized and bare-metal servers, providing the overlay and underlay network flexibility that converged data center environments require.
Campus Distribution Layer
The QFX5110-48S-AFO serves as a capable campus distribution switch, supporting 10GbE downlinks and 40GbE or 100GbE uplinks with MC-LAG and EVPN multihoming for resilient, high-throughput campus connectivity.
Latency-Sensitive Workloads
Sub-microsecond wire-speed switching in cut-through mode makes this switch well-suited for latency-sensitive applications including financial trading platforms, real-time analytics, and high-performance computing clusters.
Virtual Chassis Scaling
Up to 10 QFX5110 switches can be linked in a Virtual Chassis, enabling organizations to scale port density and aggregate bandwidth across multiple units while managing them as a single logical device.
What's Included
Juniper QFX5110-48S-AFO Switch
Power Supply (AC)
Fan Tray(s)
Rack Mounting Hardware
WhaleyComm Certificate of Testing
Lifetime Warranty — No Time Limits. No Questions.
Every WhaleyComm unit ships with a Lifetime Warranty. If it fails under normal operating conditions at any point, we replace it. We have stood behind our hardware for 25 years and 5,000+ customers — that is not a marketing line, it is our operating standard.
Compatibility Details
Review supported optics, cables, software, management protocols, and environment-specific compatibility guidance.
COMPATIBLE OPTICS & CABLES
✓
The switch supports a wide range of SFP+ transceivers (1GbE/10GbE) and QSFP28 transceivers (40GbE/100GbE), as well as DAC and AOC breakout cables.
SOFTWARE COMPATIBILITY
✓
The QFX5110-48S-AFO is compatible with Junos OS and is supported in QFX5110 Virtual Chassis configurations alongside QFX5100 Series switches.
SUPPORTED PROTOCOLS & STANDARDS
✓
It interoperates with QFX5110-32Q and QFX5200 Series switches in spine-leaf topologies using EVPN-VXLAN.
For compatibility verification specific to your environment, contact our engineering team: +1 214 607-4800 or sales@whaleycomm.com
Shipping & Returns
Clear fulfilment, tracking, return, warranty, and support information for enterprise hardware orders.
Shipping
Orders typically ship within 1-2 business days after payment confirmation. Tracking details are shared once the order has been dispatched.
Returns
Eligible products can be returned according to WhaleyComm's return policy. For DOA, warranty, or product-related issues, contact the support team for replacement or resolution.
Frequently Asked Questions
Product-specific answers about compatibility, testing, warranty, fulfilment, and purchase confidence.
Yes, all four QSFP28 uplink ports can be configured as either 4x40GbE or 4x100GbE, giving you flexibility based on your core or spine infrastructure. Each QSFP28 port can also be broken out into 4x10GbE using breakout cables, bringing the total possible 10GbE port count to 64.
The QFX5110-48S-AFO runs the full Junos OS and supports rich Layer 2 and Layer 3 features including VXLAN Layer 2 and Layer 3 gateway, EVPN, MC-LAG, Virtual Chassis (up to 10 members), and MACsec encryption. Note that certain advanced features require a Premium or Advanced software license — Class 1 licenses apply to the QFX5110-48S platform.
Yes. Front-to-back airflow means air enters the front of the chassis (cold aisle) and exhausts from the rear (hot aisle), which is the standard orientation for hot-aisle/cold-aisle containment data center designs. Hot-swappable power supplies and fan trays are included to support high-availability deployments.
Yes. Every WhaleyComm unit ships with a Lifetime Warranty. If it fails under normal operating conditions at any point, we replace it at no cost — no time limits, no questions asked.
Every unit goes through our ISO 9001-certified testing process: full power-on diagnostics, port-by-port functionality testing, firmware verification, factory reset, and final inspection. A Certificate of Testing ships with every unit.
Juniper QFX5110-48S-AFO Refurbished 1.76 Tbps 48-Port Switch
$3,995.00
Juniper
Juniper QFX5110-48S-AFO Refurbished 1.76 Tbps 48-Port Switch
MPN: QFX5110-48S-AFO
$3,995.00
In Stock — Ships Same Day
